River Hamble - Mercury Yacht Harbour Rainfall ForecastUnited KingdomSEHampshireRiver Hamble - Mercury Yacht HarbourToday 26 Aug80%Wed 27 Aug60%Thu 28 Aug65%Fri 29 Aug65%Sat 30 Aug65%Sun 31 Aug40%River Hamble - Mercury Yacht Harbour rainfall forecast issued today at 7:37 am. Next forecast at approx. 9:37 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Dean Hill (Wiltshire) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads